Efficient ecological fish culture method for northern ponds

Abstract

The invention relates to an efficient ecological fish culture method for northern ponds. A polyculture mode with fish culture as a main part and shrimp culture as an auxiliary part is adopted for culture; fishes comprise grass carp, spotted silver carp, silver carp, carp or crucian carp, the carp or crucian carp is mainly cultured in the early stage, and the grass carp is mainly cultured in the later stage; the culture period comprises four stages of a shrimp releasing early stage, a shrimp releasing initial stage, a culture medium stage and a harvesting stage; and fish feed needs to be fed inthe whole culture period. The invention creates the fish and shrimp polyculture mode taking fish culture as the main part, the high risk of an intensive shrimp culture mode is overcome, and the disadvantage of low profit of fish culture is overcome; according to the method, the culture space is fully utilized according to the characteristics of the culture variety, and the culture method is adjusted, so that higher return can be generated in unit area; and the application of the micro-ecology can adjust the energy flow (C and N circulation) in a pond, more energy flow in the pond is guided tocultured animals, and the effects of eliminating adverse factors and increasing both production and income are achieved.

Description

technical field [0001] The invention belongs to the technical field of ecological breeding, and in particular relates to a method for high-efficiency ecological fish farming in northern ponds. Background technique [0002] The area of ​​freshwater aquaculture in the northern region, especially Tianjin, is generally large. In addition, because it is located in the coastal area, the pH value of the water quality is relatively high. The unique aquaculture environment has formed a unique aquaculture ecosystem, and the unique aquaculture ecosystem has gradually formed a suitable aquaculture environment. model. [0003] In recent years, due to rising feed costs, pond rent costs, and labor costs, the profit of pond-farmed fish has been declining year after year, and a little carelessness will result in losses. With the boom in shrimp farming in recent years, many farming friends have begun to explore new farming models, such as the intensive shrimp farming model and the polycultur...

AI Technical Summary

Problems solved by technology

At the same time, the disadvantages of the two models have emerged: the risk of the intensive shrimp farming model is very high, and even no harvest; the disadvantages of the fish and shrimp polyculture model are that fish and shrimp compete for space, bait, and oxygen, and the control of shrimp is not good. will survive